Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mk03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 7B8AF38000082; Sat, 10 Sep 2011 06:51:59 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1R2L93-0005U9-JH for rs_out_1@blacksheep.org; Sat, 10 Sep 2011 11:50:45 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1R2L92-0005U0-QE for rsgb_lf_group@blacksheep.org; Sat, 10 Sep 2011 11:50:44 +0100 Received: from imr-ma01.mx.aol.com ([64.12.206.39]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1R2L90-0004uR-0s for rsgb_lf_group@blacksheep.org; Sat, 10 Sep 2011 11:50:44 +0100 Received: from mtaout-da06.r1000.mx.aol.com (mtaout-da06.r1000.mx.aol.com [172.29.51.134]) by imr-ma01.mx.aol.com (8.14.1/8.14.1) with ESMTP id p8AAocGo016058 for ; Sat, 10 Sep 2011 06:50:38 -0400 Received: from White (nrbg-4d0578ce.pool.mediaWays.net [77.5.120.206]) by mtaout-da06.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id 17273E000104 for ; Sat, 10 Sep 2011 06:50:35 -0400 (EDT) Message-ID: From: "Markus Vester" To: References: <4E6B301F.3000802@iup.uni-heidelberg.de> <464F4937AE664E8AA5869E5FB3207048@JimPC> Date: Sat, 10 Sep 2011 12:50:39 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 12.0.1606 X-MimeOLE: Produced By Microsoft MimeOLE V12.0.1606 X-AOL-SCOLL-SCORE: 0:2:488951360:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: LF: DCF sidebands Content-Type: multipart/alternative; boundary="----=_NextPart_000_001B_01CC6FB8.3DFA9640" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,HTML_MESSAGE, MISSING_OUTLOOK_NAME autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:506815744:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d61874e6b414f7ccc X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Dies ist eine mehrteilige Nachricht im MIME-Format. ------=_NextPart_000_001B_01CC6FB8.3DFA9640 Content-Type: text/plain; charset="ISO-8859-15" Content-Transfer-Encoding: quoted-printable Dear Jim, LF, yes, life here (especially in DL) would also be much easier if we = decided to gather around the DCF39 nulls. There are minima near 137.53, = 137.57, 137.73, 137.77 (ie a few Hz below the TA waterhole). My current = workaround is setting the noise blanker threshold to trigger on every = FSK transition, but the disadvantage is that this creates ugly 0.1 Hz = spaced sidebands around strong signals. Best 73, Markus (DF6NM) From: James Moritz=20 Sent: Saturday, September 10, 2011 12:03 PM To: rsgb_lf_group@blacksheep.org=20 Subject: LF: Re: M0BMU / DD7PC / DK7FC Dear Stefan, Marco, LF Group, Yes... I started calling CQ on 137650Hz and then saw DD7PC ("M" copy) = and=20 replied, but perhaps Marco uses a narrower spectrogram window than I = do...=20 The reason for this frequency was that there is a null in the amplitude = of=20 DCF39's sidebands at about 137.64kHz, so received SNR is considerably = better=20 at this slightly lower frequency - Marco would have been "O" copy if he = was=20 using the lower frequency. I also heard DK7FC RST 559 working DD7PC (not audible) on 136.5kHz. I = tried=20 calling in CW also, but apparently the noise level is too high. Cheers, Jim Moritz 73 de M0BMU=20 ------=_NextPart_000_001B_01CC6FB8.3DFA9640 Content-Type: text/html; charset="ISO-8859-15" Content-Transfer-Encoding: quoted-printable
Dear Jim, LF,
 
yes, life here (especially in DL) would = also be=20 much easier if we decided to gather around the DCF39 nulls. There = are=20 minima near 137.53, 137.57, 137.73, 137.77 (ie a few Hz = below the=20 TA waterhole). My current workaround is setting the noise = blanker=20 threshold to trigger on every FSK transition, but the disadvantage = is=20 that this creates ugly 0.1 Hz spaced sidebands around strong=20 signals.
 
Best 73,
Markus (DF6NM)
From: James Moritz
Sent: Saturday, September 10, 2011 12:03 PM
Subject: LF: Re: M0BMU / DD7PC / DK7FC

Dear Stefan, Marco, LF Group,

Yes... I = started=20 calling CQ on 137650Hz and then saw DD7PC ("M" copy) and
replied, = but=20 perhaps Marco uses a narrower spectrogram window than I do...
The = reason for=20 this frequency was that there is a null in the amplitude of
DCF39's=20 sidebands at about 137.64kHz, so received SNR is considerably better =
at this=20 slightly lower frequency - Marco would have been "O" copy if he was =
using=20 the lower frequency.

I also heard DK7FC RST 559 working DD7PC = (not=20 audible) on 136.5kHz. I tried
calling in CW also, but apparently the = noise=20 level is too high.

Cheers, Jim Moritz
73 de M0BMU=20


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